hey. not new to music, but am new to amp building and repair. i thought i would take an old traynor 2150 2x15 cab that someone had ditched at my jam space. everything had been gutted out. no speakers, no wires. i bought 2 re-coned jbls (for a wicked price), wired them in parellel with 14 gauge braided wire, hooked it up to my mesa fathom head and it works..... kinda. it has load hum and popped a few times. if i unplug my bass the hum stops. if i touch the metal on the patchcord when its plugged in, the hum reduces greatly but is still there. i this with 2 patchcords and same results. bad wiring job on the cab? grounding problem with bass? other?